4.6 Article

Gill Histopathology as a Biomarker for Discriminating Seasonal Variations in Water Quality

期刊

APPLIED SCIENCES-BASEL
卷 11, 期 20, 页码 -

出版社

MDPI
DOI: 10.3390/app11209504

关键词

environmental monitoring; histopathological biomarkers; histopathological alterations; fish gills

资金

  1. Ministry of Education and Science of the Republic of Serbia [143058]
  2. European Union [EFOP-3.6.3-VEKOP-16-2017-00008]
  3. city of Pancevo [06SER02/03/007-8]
  4. Ministry of Innovation and Technology of Hungary [TKP2020-IKA-12]
  5. European Social Fund

向作者/读者索取更多资源

This study evaluated histopathological alterations in fish gills as biomarkers to discriminate seasonal variations in water quality within the same aquatic ecosystem. Epithelial hyperplasia, mucous cell alterations, epithelial lifting, and necrosis were identified as the most significant contributors to seasonal differentiation.
Histopathological alterations in various fish organs have a pronounced value in aquatic toxicology and are widely used in environmental monitoring. The aim of this study was to evaluate whether histopathological alterations in fish gills can discriminate seasonal variations in environmental conditions within the same aquatic ecosystem, and if so, which alterations contributed the most to seasonal differentiation. Microscopic examination of common bream Abramis brama gills displayed various alterations in gill structure, including epithelial hypertrophy, hyperplasia, mucous and chloride cell alterations, epithelial lifting, necrosis, hyperemia and aneurism. These alterations were subsequently quantified by a semi-quantitative analysis in order to detect differences in the intensity of the mentioned alterations. Epithelial hypertrophy, hyperplasia, epithelial lifting and necrosis varied significantly between seasons with only necrosis being significantly higher in the first season. Discriminant canonical analysis displayed that epithelial hyperplasia, mucous cell alterations, epithelial lifting and necrosis contributed the most to discrimination between seasons. Overall, this study demonstrates that histopathological biomarkers in fish gills can be used in discriminating seasonal variations in water quality within the same aquatic ecosystem.

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